Addend-machine



W. A. HUMAN.

ADDING MACHINE.

APPLlcATmN FILED APR. 1e. m7.

1,333,253. Patented Mur. 9, 1920.

9 SHEETS-SHEET l.

@n von/1to1 C] Hoz W. A. HUMAN.

ADDING MACHINE.

APPLlcArloN min APR. 1e. 1911.

Patented Mar. 9, 1920.

9 SHEETS-SHEET 3.

C] Hoz n ma w. A. HUMAN.

ADDING NIACHlNE. APPLlCATlON HLED VAPR. lEi, |911.

W. A. HUMAN.

ADDING MACHINE.

APPLlcATmN FILED APR.16.1917.

Patented Mar. 9, 1920.

H SHEETS-SHEET 5- @num/woz cfu/w13 W. A. HUMAN.

ADDING MACHINE.

mlPLlcfmoNA FILED APR. la, |911.

Patented Mar. 9, 1920.

9 SHEETS-SHEET 6.

@NM1/uma W. A. HUMAN.

ADDING MACHINE.

APPucATloN FILED APH. 1s. wir.

1,333,253. Patented Mar. 9, 1920.

9 SHEET5-SHEET L f2 l /22 W. A. HUMAN.

ADDING MACHINE.

9 SHEETS-SHEET 8.

W. A. HUMAN.

ADDING MACHINE.

APPucATIoN mtu APR. 16. 1911.

Patented Mar. 9, 1920.

9 SHEETS-SHEET 9.

, oooaooooao T ...NWN

UNITED STATES- PATENT OFFICE.

WALTER A. OF DENVER, COLURADO.

ADDING-MACHIN E.

Application filed April 16, 1817. Y Serial No. 162,292.

'tains to make and use the same, reference being had to the v,accompanyingzlg drawings, and to the characters fofreference marked thereon, which form a .partofgthisspecitication- My invention relates toiinprovements in adding machines, my4 object being to provide anA exceedingly simple and economical construction of this character which shall at the same time be easily operable and thoroughly efficient for theV purpose 'intended. i

The structure consists of a number of features which I prefer to refer to as the adding, moving, carrying, auxiliary-carrying, operating and printing devicesrespectively. What I term the adding structure or mechanism consists .of a keyboard having banks of keys respectively designated units, tens, hundreds, thousands, etc.; primary index rods having characters from 1 to 9 inclusive and also the lzero character at each end thereof; carriages each consisting of a pair of spaced plates each carrying twenty vertically movable pins which are a'cted on by stems connected with the keys of the keyboard as the keys are actuated for adding purposes, each carriage being "equipped with rods extending from opposite extremities thereof and having formed on the portions adjacent their free extremities, characters from zero' to 9 in-V clusive reversely arranged as to the characters on the corresponding extremities of the index rods.l 'The moving device consists of two arms which are arranged to move simultaneously -in reverse directions and in the same vertical planes as lthe pins of thecorresponding carriages, there being a pair of these arms for each carriage, and a carriage for each bank of kevs, referring to the banks as units, tenshundredS, thousands, etc. These arms are employed in shifting the carriages in order to indicate theresults specification uf Letters Patent.

Patented Mal-Q9, 1920.

ofl the -adding operation. The carrying mechanism consists of means employed. in connection with the aforesaid mcvingiarms, for performing theadding function when the result is greater than 9. |The auxiliarycarrying mec ianism is em loyed in connection with the carriagesj wen theucarria'ge pins havey been adjusted to` bring fthefnumerals 9 into the result,` in hundreds, thousands, and other vhigher denominations. The operating mechanism consists of means connected with the'arms of the moving mechanism for actuating the latter forthe .purpose o f;adjusting the vcarriages as heretofore explained; Awhile the printing mechanism consists ofqmeansvforprinting the primary numbers ,after they are ,put into the machines for adding purposes;4 and also for ,printing the result numbers 4after the carriages have been properly actuated to bring-these numbers into proper alinement for printing urposes. 4This printing mechanism consists of'two leversV arranged in parallel relation, oneconnected with the means for yprintingr the primary numbers, and the, other connected with the means for printing the result numbers.

Having briefly outlined myimproved constructionv as well as vthe function it is intended to perform, I'will proceed to describe the same in detail, reference being made to the accompanying drawn Ain which is illustrated an embodiment t ereof. Inthis drawing Figure 1 is a top plan view of the machine shown on 'a relatively small scale. l

Fig. 2 is a side elevation of the same.

' Fig.' 3 is a vertical section taken through the central part ,of the machine both. extremities being broken away, the construction being shown on .a much larger scale than in Figs. 1 and 2. This section is taken approximately on the line 3--4 Fig 8 viewed in the direction of the arrows and showing the carriages in their normal positions before-adjustment or manipulated for for adding purposes. l

Fig. 4 is a section taken on the same line, but showing the carriages or at least one of them shifted toward the right, one of the pins having been depressed and brought intothe` vpath of one of the moving arms which are shown: actirated suiiiciently to bring one of the arms into engagementwith the depressed pin.

Fig. 5 is a vertical cross section of the mascale than in the arms being a p chine taken approximately on the line 5-5 Fig. 3 looking toward the right.

Figs. 6 and 7 are detailed views illustrating the mechanism for locking and releasing the keys and their attached blocks, the keys having been actuated for adding purposes.

Fig. 8 is a fragmentary top plan view of the central portion of the structure showing substantially in plan, the portions of the machine which in Figs. 3 and 4 are shown in sectional elevation.

Fig. 9 is a section taken on the line 9-9 Fig. 4 looking toward the right and upon the line 9--9 Fig. 10 looking u Wardly or inthe direction of the arrow, an more particularly illustrating the printing mechanism.

Fig. 10 is a top plan view of the righthand portion of the machine or the portion illiistrat'ed in end view in Fig. 9. l'

Fi 11 is a vertical section taken approximatelyon the line 11-11 Fig. 1 viewed in the direction of the arrow, the parts being shown ona much larger scale.

Fig. 1'2 is a top plan view of the left-hand extremities o f two of the rimary indicaring rods and one of the carriage or result indicating rods. 'This view is obtained by looking in thev direction of arrow 12, Fig. .11, assuming that the top plate of the machine isreinevect.

Figgfl 'is a side elevation of what I will term the forward-extremity' of the' 'machine or that shown at'the right in Figs. 1 and 2., this view being shown in aA much larger last named views..

Fig. 14 is a section taken approxlimately onf the line 14-14 Fig. 3 looking toward the le t.

Fig. 15 is n diagrammatic view illustrating the carria s and their manipulating an or. top view of this structure, the carriages corresponding with thc units, tens and hundreds banks of keys only, being illustrated.

Fig. 16 is a top plan view of one of thel primary indicating rods and one of the carriages with its terminal members, portions of -the rods intermediate their Aextremities being broken away in both instances.

Fig. 17 is a sideelevation of the saiuc structure. f

Fig. 18 is a detail of construction shown on a larger scale than in Fig. 5.

Fig. 19 is a detail view illustrating thc special construction of the blocks of the zero keys. t K

The same reference characters indicate the saine parts in all the views.

Let the letter A designate the main framework of vthe structure which includes a base B. vertically disposed end plates C and D, side plates E and F. a main top 'plat'e 12 and n plate 13 mounted on the top plate and spaced therefrom by a depending part 1i forming a chamber above the top plat(1 l2 in which sprinn's 15 are arranged upon the stems 1G of tTie keys 1T of the various banks 18, 19, 20 and ll which are the units, Lens, hundreds and thousands banks of keys (see Fig. l).

rfhe keys of each h-.ink have respectively formed thereon lhe nunicruls 1 to il inclusive, the Zero key which I will designate by thc numeral 0 being devoid of a key top brcause it is actuated by other mechanism of the structure hereinafter explained. alter each actuation of the aforesaid moving amis.

The stems 16 of all the keys pass through perforations formed in the plate 13 and are equipped between the plates 12 and 13 with stops 23 which are acted upon by the upper extremities of springs 15 whose lower extremities cnoage the upper surface oi the plate. 12. ence these springs normally maintain the keys at their upward limit of movement as best illustrated in Figs. 3, 4 and 5. The stems 16 of the keys also pass through perorations formed in the top plate l2 ant to their lower extremities or the portions below the plate 12, are respectively attached blocks 2A- which are of suiicieut width to extend across or approximately across the tops of the carriages whereby when the keys are pressed, any block will extend across the top of the carriage in order to engage a pin ol' either of two rows or sets of pins which ro'ws or sets are respectively designated 25 and 2G, there being ten pins of each row or set. Hence the pins of one row, viz., that indicated at the left in Fig. 15 will be designated 25 while the pins of the other row or that at the right in Fig. 15, of each carriage, will be designated by the numeral Q6.

Each of the blocks 24 is provided on one end with a short pin Q7', which when the ke) is depressed whereby the block is carried downwardly a suitable distance. a springactuated retaining paw] 28 engages the piu and retains the block and consequently thc key in a depressed position, until another key7 of the same bank is pressed, since a singie paiwl serves as the retaining and releasing member for all of the keys of each bank 1S. 19, 2U. 21. etc. The pawl 2S which is of sufficient length for the purpose. is equipped at its opposite extremities with triinnioiis 29 which are journaled in depending angle brackets 30 which are secured to the under-surface of the top plate 12 as shown at 31. One extremity of one trunnion of each pawl Q8 is provided with au extension 32 to which is made fast one extremity of :i crank arm 3x3. the other extremity of the said crank :irni bein!` connected as shown at 34 with acommon rod 35, the upper extremity of the crank arm in each case carrying :i pin 36 which normally engages one extremity V37 of a slot 38 formed in a reinforcement 39 with which the rod is equipped where each crank arm connection is made, thus allowing the pin 36 in each case to move idly in the slot 38 of the part 39 of the rod when the pawl 28 is actuated bythe engagement of any pin 27. By virtue of this construction each pawl 28 corresponding with the keys and blocks of each bank, will be actuated for releasing-the key at its individual bank only as the keys ol' that bank are pressed, and will not be actuated1 forreleasing purposes when the keys of any other bank are pressed, and still all of the keys of all the banks may be simultaneously released by the movement of the rod 35 toward the right (see Fig. 5) in which the arrow a indicates the direction of the movement of the rod for releasing all the keys of all the banks. It will be understood that this will operate for this purpose since the pins 36' of all the crank arms 33 engage the left-hand extremities -of the stops 38, still referring to Fig. 5 ofthe drawing. At one extremity the rod 35 ispivotally connected as shown at'40 witha crank arm 41 which is secured-at its opposite extremity to a rod 42 which extends forwardly (see dotted lines in Fi 1). This rod 42 is journaled in suitabe supports connected with the top plate of the machine, one of these supports being .indicated in Fig. 9 and designated by the numeral 43, the same consisting o f an ordinary depending angle bracket. This rod 42 after each partial rotary movement incident to the actuation of the crank arm 41 in the direction of the arrowr a in Fig.` 5, is'returned to its normal position through-the medium of a spiral spring 44 (see Fig. 9 'One extremity of the spring is connect with the casing 45 as shown at 46 while the opposite extremity is connected as shown at 47 with a relatively long arm 48, one extremity of which is made fast to the rod 42 as shown at 49. The arm 48 is also pivotally connected as shown at 50 with an upright ratchet bar 51 which is vertically movable in a guide 53 mounted on an upright member 54 in which the extremities of rollers 55 `and 56 are journaled, the opposite extremities' of the said rollers being journaled in a similar upright 57, the two uprights being secured to the top plate 12 as best illustrated in Fig. 9. A lever 58 which is pivotallv connected at one extremity as shown at 59, (see Fig. 1) is pivotally connected as shown at 60 with a dependin rod 61 whose lower portion is equipped with a projection 62, which when the arm. 58 is actuated for printing the primary numbers as hereinafter explained, acts upon` a dog 63 pivotally connected as shown at 64 upon the inner extremity of a` crank arm 65 which is made fast on the rod 42. This dog is connected with the arm 65 by a'sort of knifethe arm 65 having a shoulder 66 ocks the dog against movement when pward direction, but e freely when force nward direction. Hence s ressed downwardly for t e projection 62 of the 63 which will e projection to ybut when the lever is ed upwardly by virtue nged beneath the said l extremity, the projecthe dog 63 and therek arm 65, to impart a ment to the rod 42 in a the rod 35 in the direc- (see Fig. 5), ill be actuate blade joint s applied in an u allows the dog to mov is applied in a dow when the lever 58 i printing purposes, rod 6l, will engag move suiciently to allow t pass below the dog, released and is carri of a sprin lever near its pivota tion 62 will act on throu h on the cran parta rotary move direction to actuate tion of the arrow a all of the pawls 28 w ge them from the pins 27 of t 30 connected with the stems of th heretofore explained.

Arranged beneath th bank of keys, is a carr upper and lower plates spaced by end spectively conn which as shown in the wardly beyond the carri bring their end portions upper casing parts 45 and 4 forward and rear extremities as heretofore explained. Th sists of a bar whose d and contains the char 4, 5, 6, 7, 8 and 9; w of a similar bar ha face 7 7 and also co ters arranged in t ey blocks 30 of each iage 68 composed of 69 and 70 which are members 71 to which are rembers 72 and 73 drawing are bent upends in order to and 75 into the n located at the of the machine e part 74 conce 76 isflatacters O, l, 2, 3, hile the part 75 consists ving a flattened to ntaining the same c arache same way per and lower plates 69 and 70 of perforated to receive two ns, there bein two sets bein ected rod me upper surfa carriage is rows or sets of pi each set and the designated by the numerals heretofore explained. For c explanation, the pins carriage will be re characters 0, 1, 2, 3, the pins of the set designated by the characters 5, 6, 7 and 8 of the set 25 characters and ar and 77 of the cari' tofore explained the characters for the set 2 cation of the arrangeme ters in the set 25, in ord designated by the chara into transverse alinemen sets, the other pins of the two s carriage extending in from the pins 9. Nor carriage has been shi poses, the pins of the set 25 arev dire g ten pins in g respectively 25 and 26 as onvenience of of the set 25 of each spectively given the 7 8 and 9; and be respectively 9, O, 1, 2, 3, 4, the designation spending exactly with the rangement on the iage rods 72 and 73 arrangement of 6, is a slight modint of these characer to bring the pin W0 FOWS 01 ets. of each opposite directions fted for ad low and in position to be engaged by the blocks 24 ofthe keys of the corresponding bank, the block connecte with the zero key being in position to engage the zero pin of' the set of keys 26 and so on throughoutthe entire set of keys and pins, whilefthe set of pins 26 other than that designated 9, are not in position to be engaged by the blocks 27 of the respective keys, until the carriage is shifted from its normal relative position with reference to the location of the corresponding bank of keys.

Each pin ofieach of theisets `25 and 26 of cach carraige, is provided with -upper and lower stops respectively designatediISand 79; each of the stops 78 of all the pins except those designated 9, are arran ed above the carriage, whilethe stop 78- of t eipins 9 of both sets 25 and 26 are located below the carriage,4 these particular pins being slightlyv shorter than the other pins `whereby'their lower extremities when Ithelpins are depressed, donot extend quite so 'far belowthe carriage athe" extremities of `theol-.her pins.

The sto s T9 ioi'fali thecarriagerfpinsare arrange betwe'en the two platesz69fanl 70,

and these stops 79.arenormally-held in encagement-w'rthi he upper fplate69 of the carriageby meaxisof springs 80 which surround the pins betweenV the carriage' plates, their upper extremities acting on the stop 79 while their lower extremities engage .the bottom plate'xw., f -1 When'rany'key is pressed during the performanceof-the adding function, its corresponding block 24 acts upon a pin of the cori responding carriage `to'ldepress the pin far enough to bring the stop fr' 9 of that pin 4helen a spring actuated retaining .member whereby the carriage pin is heldin the depressed position (see Fig. 45) in which a number of the pins are illustrated as so held. There are two 4retaining members 81 for the ins of'each'carriage and the two members of each pair are connected at their extremities by a spiral spring 82 as best illustrated in Fig. 14. One of these retaining members engages the pins ofthe set 25 of each carriage, while the other engages the pms of the set 26,

the two rows of pins being transversely spaced to properly correspond with the spacings of the two retainers 81 arranged adjacent the pins of each carriage.

Each carriage is actuated for performing the adding function. through the medium of two arms 83 and 84. each pair ot arms being pivotall;y mounted adjacent each other upon a shaft 85. These arms are disposed to more in vertical planes and are actuated through the medium of two spindles 86 and 87 to which are respectively made fast crank arms 88 and 89 which arms are respectively pivotalllr connected as shown at 90 and 91 with the adjacent extremities of links 92 and 93 which are in turn respectively pivotally connected as shown at 311 and 95 with the arms 83 and 84. From this it will be understood that the crank arms 88 and 89 together with the links 92 and 93. form a sort of toggle connection between the spindles 86 and 87 and the arms 83 and 84. The object of this particular connection, is to enable the operator to perform several other unctions siinultaneouslyv during the operation of the arms 83 and 84 for manipulating the carriages of the machine during the adding operation. The mechanism whereby these additional functions are performed will now be described: Secured t0 thc spindle 86 is a projection 97 which as the spindle is actu-ated for the purpose of moving the corresponding carriage-actuating arm 88. engages a short dog-96 connected by a kniie-blade'joint with one extremity o a lever 98 whose opposite extremity is pivotally connected as shown at 200 with the lower end of a link 201 vWhose opposite end is pivotalliv connected as .shown :n.202 with one arm of a lever. 203 Whose opposite arm is pivoted as'shown at 100-to the lower end ot axrod. 101 whose opposite orupper exe tremity ispivotally connected: as shown .at 102 with a e'rank arm 103.Whose opposite end is madeY fast to a spindle l1011. Also made fast to this spindle4 is an arm 105 whose opposite extremity engages a stop 106 made fast to the zero key of the corresponding bank of keys. It will be understood that there is one oll hese stops 106 Jfor the zero kcjf ot' each bank, whereby all of the zero keys are actuated every time the arms 83 and 84 are operated as hereinafter described. Hence there is a lever 98 for each bankof kejvs for each pair of arms 83 and 84 and'all of these levers are connected and supported by n rod 99 which is rigidly secured to the series of levers.

The spindles 80 and 87 pass through the casing plate E of'the machine and extend exteriorli-v therefrom. the exposed extremity ot each spindle being equipped with a manipulating crank or arm 107. As the spin llc 86 is turned or given the necessary partial rotation t'or actuating the arm 83, thc projection 97 engages the dog 96 which moves idly during the movement of the arm 83 toward theleft (see Figs. 3 and 4). but as soon as the spindle 86 is released. the arm 83 automatic-.illy returnsl to its normal position or that shown in Fin: 3 and during tiis movement. the projection 97 engages the dog 96 and actuales the lever 98. since the dog 96 has a knife-blade joint connection with its lever whereby it will move idly when force is applied in au upward direction, but'will actuate the lever when force is applied in a downward direction as when the projection 7 returns to its normal position. The operation of the lever 98 due to the application of force in a downpin 91, its

Aa longitudinal direction by Ward direction to the dog extremity or the lever, will pull the rod- 101 downwardly and actuate the arm 105 to cause it to depress the zero key of the corresponding bank and this operation takes place simultaneously with all of the zero keys of all the banks, the mechanism just described for operatin a single zero key bein repeated with re erence to all of the ot er corresponding keys, the zero keys being devoid of buttons which are applied to the extremities of the other ,ke Ysand upon which the numerals are forme as heretofore explained.

At the same time the arm 84 is actuated by the partial rotary movement of the spindle 87-which.actuates a rod 108 which is connected at one extremity with the pivot opposite extremity being pivotally connected as shown at 109 with a lever 110 which is fulcrumed at 111. The upper or free extremity 112 of this lever, is arranged in close proximity to a rod 113 and acts upon a stop 114 with which that rod is equipped, toreturn the rod to its normal position after ithas been actuated in `a spring 115 mounted thereon, -one extremity of the spring engaging the wall D of the casing while its opposite extremity engages a stop 116 fast on the rod. This rod is normally held at its limit ofmovement toward the left, referring to Figs. 3, 4, 16 and 17, by the extremity 117 of a relatively long lever 118 which is fulcrunied at 119; The rod 113 is slidablymounted in the two walls C and'D of the casing and its vopposite extremities are respectively equipped with members 120 and 121 having top dat faces upon which are formed the characters 1, 2, 3, 42 5, 6, 7, 8, 9 and 0 arranged from left to rlght in the order named. The object of the member 120 is to indicate through .an opening 122, the particular key which is pressed during the operation of the machine in order that the operator by glancing at the opening 122 may know whether or not he has pushed the proper key. As the key is pressed, its block 27 acts upon the lever 118 and moves the latter suiciently on its fulcrum 119 to disengage the extremity 117 from the stop 114 of the corresponding rod 113, and as soon as this occurs, 'the spring 115 which has been placed under tension by the movement-of the rod 113 to its normal position, acts to move the said rod toward the right (see Figs. 3, 4, 16 and 17) far enough to 'bring the character of the part 120 of the rod into view in the corresponding opening 122 of the top plate of the machine. The movement of the rod 113 under the iniiueuce of its spring.'is determined by the particular key which is pressed. the stop 116 of the rod 113 having a projection 123 which engages the block'27 of the particular key pressed. Hence the movement of the rod is stopped just in time to bring the number or numeral corresponding with that on the actuating key, into position to be seen through the said opening 122. At the same time the corresponding character on the member 121 of the rod 113, is brought into position to be printed on an apron or ribbon 124 which is carried by a roller 125 mounted in supports 126 extending upwardly from the top plate of the machine where it extends over the casing member 45. Each of the characters on the part 121 of the rod 113, is of such form that as the ribbon 124 which is inked is forced downwardly thereon by the corresponding movement of the lever 58, the numeral on the member 121 will be printed on the ribbon, the latter preferably consisting of a strip of paper of suitable width. Hence as one or more figures or characters corresponding with those on the members 120 and 121 of the rod 113. are put into the machine so to speak for adding purposes, they may be printed on the ribbon 124 by the downward movement of the lever 58. Then after these numerals which are arranged in transverse relation to the ribbon 124 have been added by the proper manipulation of the arms 83 and 84, the corresponding rods 113 will be returned to their normal positions -by the parts 108 and 110 whichare operatively connected with the arm 84 as heretofore described. It has already been explained that when the lever 58 is actuated for printing purposes, that its operation will impart partial rot-ation to the rod 42 and the r0.1 35 whereby all of the blocks 27 and their-corresponding keys which have been depressed, will be released. lfleuce the kevs are released and allowed to return to their normal position practically simultaneously with the return of the rods 113 to their position. l

The upper extremities ofthe arms83 and 84 are constructed with special reference to the function of these arms in the manipulation of the carriages carrying the sets of nins 25 and 26 as heretofore explained. Each arm has what may be termed an advance face 127 which extends forwardly from a rear face 128. thelerms forward and rear being used with reference to the travel of the arms 83 and 84 during their-initial manipulation for operatingr the carriages by virtue of their engagement with the depressed pins of the carriages. This distinction has no significance with the arms 83 and 84 of the carriage corresponding with the units bank of kevs but is of Vimportance with reference to the rms of the other banks. Again. the rear p rtions of the arms 83 and 84 are extended upwardly as shown at 129, in order that they may be long enough to engage the pins of the carriage corresponding with the keys 9, since the said carriage pins are shorter than the other pins as heretofore explained and when deressed are never in position to be engaged y the advance faces 127 of either of the arms 83 or 84. l/Vhenevcr a pin except 9 of the set 26 of the units carriage for instance is down and in the path of the corresponding arm 83, one must be added to the next bank above, and in order to do tins, the arms 83 and 84 of the tens carriage must be shifted on the shaft 85 from their normal osition. The normal position of these arms 1s such that the advance face 127 of the arm 83 is in line with the pins of the set 2G, while the rear face 128 of the arm 84 is in line with the pins of the set 25. In order to perform the carrying funi tion as just explained, 1t is necessary that these keys be shiftedon the rod 85 in order to bring the rear face 128 of the arm 83 into line with the pins of the set 26, while the advance face 127 of the arm 84 is brought into line with the' pins of: the set or row 25. The manner of accomplishing this Vfunction will non7 be explained: When any pin except 9 of ithe sei-,L26 "of the umts carriage is depressed; its stop 78 engages a relatively long lever 130'which is fulcrumed on a rod 131, the extremity of said lever remote from its fnlcrum being pivotally connected as shown at 132 with a depending rod 133 whirhis pivotally connected-iat its lower extremity as shown at 134 with a crank arm 135 which is fast on a shaft 136 journaled in the Side plates 'C and D of the casing. Upon this shaft 136 is mounted 'a cam 137 which when the shaft is thus actuated is brought intdeng'agexnent with the adjacentarm of the two arms j83 and 84, whereby 'both'arms are shifted on the shaft 85 toward the left. referring to Fig. A5', whereby the rear face of the arm 83 of the tens carriage -is brought into alinefnnt with the'pins of theY set 2 6. while the advance face of the arm is brought into alinement with 'the pins of th:l set 25 of the tens carriage. Again. as soon as a pin except 9 of the Set'25' of the units carriage, forI instance, is next depressed. its stop f'8 will act upon a 'lever 138 which i`i pivotally connected lat one extremitv with a rod 139 which in turn 'is connected with n crank arm 140 fast on a`shaft'141, whcrebv a partiai rotary movement will be imparted to saidshaft, said movement being sufirient to actuate a cam 142 on said shaft and canse it toengage the adjacent arm as 84 for instance. wherebv the two arms 83 and 84 wil be shifted on the shaft 85. toward the right. referring to Fig. 5. wherebv the tivo arms 8? and 84 of 'the tens carriage, for instaure. will be returned to their normal position. Again. when anv pin except 9 of the set 26 of the tens carriage is depressed. its stop 78 will also act upon a lever 130 and through the medium of a rod 133 and a crank arm 13:3 actuate a caxn 137 to shift the arms 83 and S4 corresponding with the hundreds carriage toi'fard the Erft (scc Fig. 5) sufiiciently to bring the rear face 12S of the arm 83 into line with the pins of the set 26 of the hundreds rarriagc, and to bring the advanced face 127 of the arm 84 into line with the pin of the set 25; while when a pin 25 except 9 of the set of the tens carriage is depressed, a lever 138 will be actuated through the medium of a rod 139 a crank arm 140 and a cam 141 to return the arms 83 and 84 corresponding with the hundreds carriage to their normal position. Further more, when a pin except 9 of the Set 26 of any carriage is depressed, the arms 83 and 84 corresponding with the ,'arriage of the next higher denon'lination, will 'be shifted toward the left. referring to Fig. 5 or in a direction to bring the rear face of the arm 83 into alinement with the pins ofthe set 26. and the advance face into alineinent with the pins of the set 25; while when any pin except 9 of the set 25 of any carriage is depressed, the arms 83 and 84 corresponding v with the carriage of the next higher denomination. will be moved to the reverse position or to their normal position.

Again, when a pi n 9 of the tens carriage is depressed. it acts through the medium of thc stop arzn 78 on a ,relatively long lever 144 pivofed'on a shaft'l-i to depress a rod 146 which is pirotally connected as shown at 147 with va caln plate 148 which is actuated to shift the arms 83 and 84 correspondingwith the hundreds carriage toward the left (see Fig; 5) or in a position to bring the rear face 128 into line with the pins of the set 26 and the advance face 127 into alinement with 'the pins 25 of the same carriage. In other words. the mechanism last explained serres to shift the arms 83 and 84 corresponding with the hundreds carriage, into the same position as these arms are shifted, when a pin except 9 of the set 26 of the tons carriage is depressed. Again, the saine mechanism is actuated when a 9 pin of the hundreds carriage is depressed` to shift the arms 83 and 84 corresponding with the thousands carriage for the same purpose. and so on. As shown in the drawing.; each cam plate 148 acts upon a pin 149 of the adjacent a rm 8l. :is a fnlcrurn when it is shifted for actuating the arms 83 and 84 as heretofore explained. Furthermore. the cam plate is pivolally connected with the wall D of the casing as shown at 150. In view of the fact that the rod 146 is cons nected with the opposite end of th"can1 plate as shown at 151 (sec Fig. 3), and the shaft 85 is. inst below the central portion of ih:- cam plate 148. it is believed that the construction will he operativo without fnl'- crurninsr the cam plate at its end opposite the `tnlcrum 150 though provision may be erige ani-lassen"adjicetluisffns: *Teus plate 148 engage andfshftfthe 'adjacent arm 83 only whenfthe adac'e'nt arm :184 has already been :shifted` Thus; al` nine'y pin in one bankfwill carry *10 to the ineiitbank the diagrammaticvi'ew (Fig. I15) order to illustrate the ,use 'of the machine inthe In other words, dai-ridges are shown corresponding withI the units, `tens and hundreds'jbank's': f fliers, andfQI 'twill ifor' conv84 into alinementlrith 'the-"pins of the s et 25, It should be explained that thedacs spaced tha'ttlie distance between them meas ured in thedirection of travel when shifting the carriages` is the distance between any two pins `of either set, so that when-the yadvance face of )an arm engages a pin, it

will move the carriage duringthe Vnormal travelv of thei'arrn one space, `lor the distance betweentufo pinst'farthe'i" than when the rear-face-'ofthe saine arm engages-the same pin. ,The'-lirnit of travelof'the arms 83 andffefis f'roxnlthe full line to' the dotted line positions' -of each carriage in the da` grammatic view, `th'us shoyring that any rear face of an arm 84 will carry any pin that Vit may engage to a point on `the broken line O in this View, While if the sainelpinvwere engaged by the advance face 127, it gwou'ld carry thejpin one spacebeyond the broken line O. 4

`To illustrate the operation of"v these carriages, I will now take a simple, concrete ex'ample: For instance, I will explain the manner of'adding the numbers 6, 66`and 60; rst I will operate the key 6 of the units bank of keysfwhich' I will assume occupies l,the osition directl over the pi-n indicated by-t e heavy dot a jacent the'numeral 6 in the set' 25,'of pins 'of the units carriage, in which event,lthe pin 6 of the set 25 of the unitscarriage will be depressed, and when the 'arms 83 and 8415f are actuated by grasp- ;i'rigtle exposed."rnanipulating` arms 10'(l of the two' spindles 86 vand 87, the pin' 6 ofthe set 25 of the units carriage will be engaged by thefrear face 128 of the corresponding arm 84 "and, the'units lcarriage will be ad. 'ifanced until {this} pin 6y reachesA ythe broken dinero, 'and' the niimber' fthe member 76 on. therod 72 'Will` be `position yto be printed, and theniimber' of the member 75 fof the rod '73oftheca1'ria e 'Will be 'visible through an orifice i152* of t e topi' plateXsee Fig. 1).` fI Willnow abflV the, numberg 66 to the number 6EV flnl operating the1A key' 6 of the 1unitsbankjthe secon'd.` timeftoladd the `uniti't of the number' {mythe-"imite ica'i"ringe noni "resting in the advance position indi- "cated by" the dotted linesin the dia am- I'nati'c view,tliepn 2 of the set 26 will be under the keyA 6 which being depressed will be brought into the line of'travel of the=arm 83. 'As the arms 83l and 84 are operated the nsecond time, 'the arm 83Aifvill engage the pin `2y of the set 26 and returnthe carriage to such a` position that the pin 2 of the set 25 100 of the units carriage willbe broughtl to the broken line O. Now as the key 6 of the tens bank is depressed, the pin 6 of the tens lcarriage will also bey depressed and when 'theing'eis 83 Iand 84` are operatedthe third 105 time, the Aarm 84 of thetens carriage will have its advance face 127 brought into engagement with'sthe" in 6"of the set'25 and the said pin`6'wll e carried one space bevond the `broken line O,thus leaving the pin in said line and the number 7 exposed through 'the proper orifice 152 of the top late corresponding with the tens bank of reys, and as'the number 2 is exposed through the orifice 152 corresponding with the units 115 bank, the'nmaehine indicates the result 72,

vorvtlne slim of 6 and 66. I will now add 60 and 72: As all pins on the broken line O being the zero pins of all the banks are automatically operated at each operation of the carrying arms 83 and 84 as heretofore explained, the zero key is not manipulated in adding this number and only the key 6 in the tens bank has to be operated fand as the carriage corresponding with the 'tens -125 bank has been advanced to bring the pin? to the vbroken line O, the key 6 when operated will-depress the pin 3`of the set 26 of the tens carriage, and as'the operation of any pin ofthe set 26, results in the shifting of the arms 83 and 84 of the next bank above as heretofore explained, as the arms 83 and 84 are now operated, the pins of the units carriage will remain out ol the line of travel of the operating arms, and the pin 3 of the set 25 of the tens carriage orifices 152 corresponding with the respective banks of keys, units, tens and hundreds, or 18, 19 and 2O as indicated in Fig. 1.

It has already been explained that when any pin of either 4set 25 or 26 of a carri-.ige is depressed, it is retained in the depressed position by one of the spring actuated retainingl membersA 81 adjacent the corre spending carriage. It is important to the opera-tionof my improved structure that no two pins except' 9= of the saine carriage should be simultaneously held in the depressed position. Hence after one pin of any carriage has been depressed and rctained in such position by the bringing ot' v.its stop 79 below the spring actuated retain- Aing member 81, fprovision must be made for releasing this particular pin, as soon as any other pin of thesame carriage is depressed. .Hence revision is made for accomplishing this object. and the mechanism utilized will now be explainedzJ ust below the relatively long lever 118 which is acted on by the b locks 240i the key stems as heretofore explained, is arranged a pair of arms 252 corresponding with each carria e of the structure, these arms 252 being pxvotally mounted on the end wall C of the casing as best illustrated in Fig. 3. The inner or free extremities of these arms of each pair are normally in position to be acted on by the lever I 118 as the latter is depressed by virtue of the engagement of any block of any bank of keys. The arms252 are pivotally connected as shown at 153 with depending arms 154 which are slotted as shown at 155 to receive loosely fitting stationary guide pins 156 to cause the arms 154 to move approximately' in a vertical position when the arms 252 are actuated. The lower extremities of the arms 154 respectively engage the spring actuated retaining plates 81 arranged below the corresponding bank of keys and arranged to cooperate with the pins of a certain carriage. The downward movement of the arms '154 incident to the actuation of the arms 252 b v the lever 118 during cach depression et' a key and its block 24, is sullicient to throw the retaining plates S1 to the vertical position (see Fig. T), whereby any pin of either set 25 or 26 of the corresponding carriage, will be released since the retaining plates when in the vertiial position will no longer act on or engage thc steps 79 of the carriage pins. By virtue of this construction and ar rangement, the depressed pin ci any car ringe is released and the retaining platesl al lowed to return to their normal position before the next carriage pin is depressed. It

will be understood that as soon as thc lever 118 has passed below the inner extremities of the arms 252, the latter are free to return to their normal position, thus allowing the retaining plates 81 to assume the normal or inclined position, shown in Fig. (i und also in Fig. 5.

I will now further explain the operation et the machine through the medium of another concrete example: l' will now place in the machine the number 4321. This will be done by pressing the key 1 of the units bank; the key 2 of the tens bank; the key 3 of the hundreds bank, and the key 4 of the thousands bank. As soon as this is done, the number 4321 will appear' through the pertorations 122 of the top plate of the machine, this number taking theplace of the normal zero characters which appear through these openings. rlhc carriages are now actuated by operating the actuating arms 83 and S4 as heretofore explained. These arms will engage the corresponding depressed carriage keys and move the car riages to bring the number 4321 also into view through the perforations 152 of the top plate. It will be understood that the characters which appear through the perforations 122, are due to the movement of the indicating rods 113 which are released when any key is depressed, allowing the rods 113 to move forwardly until the projections 123 of the stops 116, engage the blocks 27 of the depressed keys. However, when the carriages are actuated to cause the number 4321 to appear through the transverse row of perforations 152, the rods 113 will be returned to their normal positions, thus returning the zero characters into view through the transverse row of perfor-ations 122. As soon as the carriages are actuated as just explained, I will add the number 5G78 to the number already in the machine, viz., 4321. In order to do this, I will depress the key 8 of the units bank, the key 7 of the tens bank, the key 6 of the hundreds bank, and the key 5 of the thousands bank. The carriages will then be again actuated. with the result that the number 9999 will take the place of 4321 as viewed through the row of perforations 152 of the top plate. During the last actuation of the carriages. the pin 9 of each carriage will be brought into line with the broken line O in Fig. l5. The depressed pin number 9 in the set of any carriage, does not operate the carrying device, therefore, the movingl devices correspending with each carriage or the arms 83 and 8-1 are in their normal position, the pin 9 of each carriage being carried forward by the arms 84 ot the several carriages. I will now add 1 lo the sum 9999. To accomplish this, l will de ress the key marked 1 in the units bank. ow as soon as the arms 83 and 81 are actuated, the arm S3 willf'a'ct on the pin number 1 of theunits carriage and more the 'said carriage to bring the zero pin of the set number 25, into position on the/broken line O (sce Fig. 15). Theearrying device of the units bank of keys consisting of the rods 130, 133, the link 135, the shaft 136 and the cam 137, will act upon the arms 83 and Si corresponding with the tens carriage, to shift said arms toward the left, (see Fig. 5) whereby the rear face '128 of the arm-83 corresponding with the tens carriage is brought into line with the set of pinsv26 of the tens carriage. The' part of eacharm'83 and Si corresponding with thefaee 1,28, is considerably elevated as :shown at 129 whereby it reachesupwardly far enough to engage the pin 9 of the set of pins with which it vis in alinement. Hence 'when the arms 83 and S4 of the tens carri are actuated, the advance face 127 of tie arm 84.

"'f which is in line lwith the pins 25 of the tens carriage, will move without engaging the pin 9 of the set 25 since the part 0f each arm 83 and 84fco'rre'sponding with the advance face is sulliciently short to pass beneath the pins 9 which are shorter'or which whendepressed do not extend downwardly so far as the other pins as heretofore explained. Hence as the arm 83 of the tens carriage acts on the depressed pin 9, its action will more fthe carriage' toward the left, (referring to 5) with or rearwardly, to bring the 'set25 of the tens carriage into position on'r the'broken 'line O. Again, when the pin 9 of the tens carriage was depres.-.ed, its stop 78 acted on the auxiliary carrying mechanism composed of the rods 114, 146 and the plate 148 to shift the actuating arms 83 and S4 below the hundreds carriage. toward the left, (referring to Fig. the. same result as heretofore explained, whereby the rear and tall face 128 et the actuating arm 83 of the hundreds carriage, was brought into the line with the set 96 of pins of the hundreds carriage, and conseque-ntly when the carriage was moved, this rear and tall face acting on the pin 9 which had been already depressed as heretofore explained, will shift this carriage rearwardly or toward the left, (referring to Figs. 3 and 4) a snliieient distance' to bring the zero character of the set ot pins 25 into position on the broken line O; and this result would also follow with reference to the thousands rarriuge sfthat there will he four '/.eros en Figs. 3 and 4) zero pin ofthe the vbroken line 0. Now it will he remembered that the tens of thousands carriage was not shifted, consequently the zero pin of its carriage would be (lc-wn, since the zero pins are always thrown down after each operation of the arms 83 and 8l and as the latter return to their normal position by virtue of the mechanism heretofore explained. Hence the arms S3 and 81 ot the tens of thousands carriage which have 4been shifted by the auxiliary carrying mechanism heretofore explained so as to bring the advance tace 12T of the arm 84 into line with the set of pins 25 of the tens of thousands carriage, and this advance face when the arms 83 and 8% were actuated, acted upon the zero pin to move the latter one space or step forwardly, whereby the pin number 1 of the tens of thousands carriage was brought into position on the broken line O. It should be eX- plained that in the diagrammatic View, the netted 'line O is positioned to correspond with the positions of the pins of the various carriages, when the latter are actuated to )reduce an adding result corresponding with that shown by the numerals of the pins which are thus alined, and when the zere pins are thus aliued in the four carriages corresponding with units, tens, hundreds and thousands banks of keys, and the numeral 1 of the tens oi thousands carriage is also ou this line, the number 10,000 will appear through the perforations 152 ot the top plate. Furthermore, this same number will be in position to be printed by the operation of a lever 258 which is adjacent and similar in construction to the printingvlever 58 for the primary numbers introduced into the machine as heretofore explained.' This lever 258 is pivoted on the pin 59 and normally supported above the printing position by a sprin 6'( in the same manner as the lever 58. y the downward movement of the lever 25S,` the adding result obtained through the operation of my machine may be printed at any time through the medium of Aan inked pad 259 which acts upon the ribbon or sheet. of paper 124 whereby the latter is forced downwardly into contact with the embossed 1` aces of the result numerals or characters which are brought -into line below the lever 258 and which are formed upon the parts 76 ot the various rarriages. lt will be understood from what has been explained, that when the lever 58 is depressed for the purpose of printing the primary numbers as they are put into the machine. the arm 51 which is provided with a ratchet fare 51 will slip past the teeth 51 of a ratchet wheel 51'l mounted on the spindle of the roller 56. and as this lever returns to its normal position, the arm 51 will move. upwardly and actuele the rathe wheel 51, whereby the roller 5G is rmi-ne suilirientlj.' io feed the pape' trip ==r ri'lill or move the same one step, whereby fresh printing surface on the ribbon is brought into View below the lever 58 and also below the lever v258. It should be explained that this ribbon or paper strip 124 after leaving the roller 125 upon which it is normally Wound, passes rearwardly around a roller 260 mounted on the supports 126, thence `forwardly around a roller 261, and thence upwardlybetween the two rollers 55 and 56.

vvAttention is now called -to Ithe following details "of construction together wthztheir functions which have not heretcfo1e..been.

specically pointed out: The indicating .and printing members 77 and 76 of the carriage rods, and also the corresponding ,members 120 and v,-121 ,of .the indicating .rods y,113, are supported by suitable' rollers ydesignated 300 and301 respectively. |:Fliese rollers are journaled in adjacent stationary parts and aford an anti-frictiona'l support 1to the extremities of these rods, thus making it practicable -to provide -relatively small rods since by virtue of these supports, their extremities willhave Yno tendency to sajg or bend downwardly. i f

The mechanism for shiiting .the carriage operating arms 83'and 84 laterally upon the shaft `85 and which lis, o erated `by imparting partial rotation-Ito tige shaft 136, is automatically returned to its normal position byvmeans fof a torsionally acting spring 302 (see Figs. 3 and 4). Again, the mechanism foiwactnating the cam plates 148 is automatically returned to its normal position when released, by meansfo atorsional spring 303. rilheblocks -24: .of-the zero rkey of each bank 18, 19 20, 21, etc., is .centrally slotted as :shown at 304, andthe lever .118:is .also provided with a registering -slot'or depression 305,*so lthat Athe lever 118 will not Ibe actuated by the downward :movement of the zerokeys 4which ras Yheretofore explained are automatically depressed through mechanism operated by the return movement-of the carriage actuating -arm 83. The mechanism thmugh the instrumentality of which the zeno keys arealldepressed-as the arm 83 returns -to itsnormal position after each carriage operating act, .is acted on by la weak spring .306, this spring being employed simply for the purpose of normally exerting .a slight downward pressure 4on the arm 105 when in either of its positions. This spring 306 is weaker than Vthe spring 15 of the corresponding -key stem, so that the recoil oi the dast named spring will return the .arm 105'and its attachments to their normal position when tthe zero keys arereleased.

The lever 118 is returned to its normal position after each operation to release .the indicating .rod 113, ,by `a spiral springr 307.

The carriage actuating arms 83 and v84 are together with'their attachments returned to their normal position `after cach carriage actuating operation, by springs 308 which are connected with the operating arms 107 at one extremity and with the side wall E of the casing at their opposite extremities.

In order to .prevent the shifting of the carriage actuating arms 83 and 84 laterally on the shaft 85, from interfering with the proper operation of the links 92 and 93 and their connections` the pivot pins 94: and 95 which are preferably rigidly7 mounted .on the said sarms, and. are made ci suiicient length and .size wi'f'th-lieference to the per foi-ations in the adjacent ends of the links, to allow the pivot .pins to move 'eely -in the link -extremitieaiand the .arms 83 and 84 tare cut away asshown at 309 to coperate'with said construction.

'In 'order to lock the ratchet wheel 51d against return movement after each operation due @to the lifting `of the ratchet Afharl, a avity pawl 310 is employed, the same .ieing 'pivotally lmounted on the jounnal -of the roller 55.

Each retaining pawl .28 `for the hey .blocks 24: is Yreturned to its normal position'after each downward movement of a key block. by a suitablespring 312 k(sce Figs. 3 and 4).

Having thus described my invention, what I claim is.:

1. An adding machine including a bank of keys, a horizontally movable carriage having devices arranged to be actuated by said keys, -amdmeans engaging anA actuated device of the carriage for imparting the horizontal rmovement, .the carriage being equipped with rods extending from the opposite ends thereof and respectively provided with indicating and printing charactors.

2. A machine Aof the class .described including keys, a fhoi-'izontally movable carriage havin devices arranged to ,be .actuated by sai keys, and lmeans engaging an actuated device of the carriage ,for imparting the horizontal-movement, the carriage being equipped with rodsextending from the .opposite'ends thereof and respectively provided with indicating and printing characters ,and which .are bro ht into view and into linefor printing during the movement of fthe carrie. Y

3. An .addiig machine includingkeys, a horizontally reciprocable carriage having devices movably mounted and arranged to be actuated by the keys, Vand means arranged to engage the actuated devices of the carriage for shifting the carriage in .reverse directions.

4. An adding `machine,including keys, a horizontally recipnocable carriage having devicesmovablv mountedand arranged to be actuatedfby .the keys, .and means-arranged to engage :the actuated devices of the carriage for shifting the latter in reverse directions, the carriage being equipped with a part provided with indicating characters.

5. A machine of the class described in cluding keys, a horizontally reciprocable carriage having devices movably mounted and arranged to be actuated by the keys, and means arranged to engage the actuated devices of the carriage for shifting the carriage in reverse directions, the carriage be ing equipped with parts respectively rovided with indicating and printing ii ncters.

6. A machine of the class described including keys, a horizontally reciprocable carriage having devices movably mounted and arranged to be actuated by the keys, and means arranged to engage the actuated devices of the carriage for shifting the latter in reverso directions, the carriage being equipped with rodscxtending from the opposite ends thereof and respectively provided with indicating and printing characters. Y

T. A machine of the class described including a horizontally movable carriage equipped with arts extendin from its opposite extremities and respectively provided with indicating and printing characters, and means for actuating the carriage, the latter being provided with elements movable into the path of the actuating means, and positioned to determine the travel vof the car ringe for a given stroke of the actuating means.

8. A machine of the class described including a horizontally movable carriage, means for actuating the carriage to impart movement in reverse directions, and devices mounted on the carriage and movable into the path of the actuating means for varying the movement of the carriage for a given travel of said last named means.

9. A machine oi the class described including a horizontally movable carriage, menus for actuating the carriage toV impart movement in reverse directions, and devices mounted on the carriage and movable into the path of the actuating means for varying the movement of the carriage forl a given travel of said last named means, the carriage being provided with indicating characters.

l0. A machine of the class described including a horizontally movable carriage, moans for actuating the carriage to impart movement in reverse directions, and devices mounted on the carriage and movable into the ath of the actuating means for varying the movement of the carriage for a given travel of said last named means, the carriage having a rod extending from one end thereof on which are formed indicating characters.

1l. A machine of the class described including a horizontally movable carriage,

moans for actuating the carriage to impart movement, and devices mounted on the carriage and movable into the path of the actuating means, the carriage having a rod extending from one end thereof on which are formed printing characters.

12. A machine of the class described including a horizontally movable carriage, means for actuating the carriage to impart movement in reverse directions, and devices mounted on the carriage and movable into the path of the actuating means for varying the movement of the carriage for a given travel of said last named means, the carriage having rods extendin from the opposite ends thereof on which are respectively formed indicating and printing characters.

13. A machine of the class described including a horizontally movable carriage, devices simultaneously movable in reverse directions t'or actuating the carriage, the latter carrying two sets of devices respectively movable into the paths of the actuating devices.

14, A machine of the class described including a horizontally movable carriage, devices simultaneously movable in reverse directions for actuating the carriage, the latter carrying two sets of devices which are respectively individually movable into the paths of the actuating devices, the carriage being equipped with indicating and printing devices corresponding in number and arrangement with one set of the said carriage devices.

i5. A machine of the class described including a: horizontally movable carriage, non-allned actuating devices simultaneously movable in reverse directions, and two sets of pins respectively movable into the paths of the said actuating devices and arranged to vary vthe travel of the carria e for a given movement of the actuating c evices.

i6. A machine of the class described, including a reciprocable carriage, means for actuating the carriage, a series of pins movably mounted on the carriage, springs acting on the pins to yieldingly retain them in the normal position, stops carried by the pins, a spring-held retaining member adapted to engage the stop of any pin when the latter is depressed, and means acting on the retaining member for moving the latter into position to release the stop of any pin, when another pin of the same carriage is depressed, said last named means comprising pivoted arms, a lever acting on said arms, and other a-rms pivotally connected with the first named arms and extending` into engagement with the retaining member.

17. In a machin(` of the class described` a casing, a carriage, the latter havingr vertically spaced plates, two sets of. pins. the pins of cach set being longitudinally alined, 

